Scala moves to Trial category in ThoughtWorks Technology Radar

In the previous radar we had two JVM based functional programming languages,
Clojure and Scala, in our Assess category. We had expressed a slight preference for
Clojure because it is the smaller and more focused language. Since the last radar we
have realized that the wider applicability of Scala makes it more approachable for
enterprise developers, and we have witnessed great successes in the adoption of Scala.
Consequently we have moved Scala into our Trial category.